May 7th, 2014

HWY 63 – Combined Median Facility (Charron Lake, AB)


Castleglenn Consultants Inc. was retained in December 2009 to undertake consulting engineering services to evaluate, assess, and recommend a design and preferred location for a combined vehicle inspections station, truck staging area and truck safety rest area within the centre median of the Highway 63 corridor.

The iterative design process involved an evaluation and comparative assessment of numerous locations and configurations of the facility to determine the preferred design.

The median based facility requires heavy vehicle operators to “unconventionally” merge with through highway traffic from the left side of the highway. As such, consideration was given to the following aspects of the design to minimize potential safety issues:

  • traffic operations along the Highway 63 corridor
  • sightlines at ramp gore and merge points
  • signage requirements
  • heavy vehicle operational characteristics
  • horizontal and vertical highway geometrics

The internal design of the multifunction facility involved:

  • identifying the design and preferred location of the 9 individuals elements (VIS, TSA, TSRA, out-of-service parking, turnaround areas, washrooms, etc..)
  • integrating the individuals elements into a single site
  • modeling vehicle turning movements within the site
  • identifying signage and pavement markings
  • reviewing pedestrian safety


Grading and geometrical design, pavement marking/signage, cost estimates, pavement design/cross-section, RoW identification, roadside design, utilities

Role & Responsibility

Prime Consultant


Alberta Transportation North Central Region